仔细观察一下烛火,便可看出火焰根据其色彩和亮度能大致分成3个部分。这是因为蜡烛的燃烧方式会因离烛芯的远近而不同。这种不同是空气造成的。物质与空气中的氧气结合,才会燃烧。因此,如果容易与氧气结合,燃烧才充分,否则很难燃烧。在烛火外侧,蜡 When you look closely at the candlelight, you can see that the flame can be roughly divided into three parts according to its color and brightness. This is because the candle’s burning method will differ depending on the distance from the wick. This difference is caused by the air. It burns when it is combined with oxygen in the air. Therefore, if it is easy to combine with oxygen, combustion is sufficient, otherwise it is difficult to burn. Outside the candle flame, the wax